Process of making glucose.



No. 745,675. I PATENTED DEG. 1,1903. LROTH.

PROCESS OF MAKING GLUCOSE APPLICATION FILED 0M, 21, 1901.

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Patented December 1, 1903.

PAT NT Fries.

LEONHARD ROTH, OF KANTH, GERMANY, AS SIGNOR OF ONE-HALF TO WIL HELM ROBERT GENTZEN, OF GllHLlGHEN, NEAR GROSS, RINNERSDORF,

GERMANY.

PROCESS Ol -MAKING GLUCOSE.

SPECIFICATION forming part of I Letters Patent No. 745,675, dated December 1, 1903.

Application filed October 21, 1901. $eria-1No. 79, 239. (No specimens.)

To (11% whom it may concern.-

Be it known that I, LEONHARD ROTH, chemist, of Kanth, in the Province of Silesia, Germany, have invented some new and useful Improvements in Processes of Making Glucose,

- nized oxygen is pressed into the hermetically closed (ligesters under a pressure of from three to four atmospheres. For one hundred kilograms one hu ndred grams of ozone are supposed to be used. It is a well-known fact that ozone cannot be produced in a pure state, it being only possible to obtain a mixture with five per cent. of oxygenthat is to say, as one is to five-said strong oxidizer acting from twenty to thirty minutes. Thereupon a sufficient quantity of sulfuric acid or of muriatic acid (if the inversion has to be effected by means of muriatic acid) is added, so that there results in the digesters a solution of three per cent. or four per cent. for muriatic acid, and then the inversion is effected under a pressure of from three to three and one-half atmospheres.

The accompanying drawing shows in ele-' vation a suitable apparatus for executing the process in question.

Pump a presses the oxygen through ozonizer b and through conduit 0 into digester d, which latter receives the waste products through tube 6. Pipe 0 ends appropriately in a perforated nozzle. Steam can be made to pass into digester d through conduit g,

said digester d being emptied by means of discharge-cock h.

The experiments made with various vegetable waste products have resulted as follows: one hundred kilograms of pine wood, 44.5 kilograms containing thirty-four kilograms of dextrose f. attenuation; one hundred kilograms of empty corncobs, sixty-eight kilograms containing forty-two kilograms of dextrose f. attenuation; one hundred kilograms 5 5 of straw, (wheat,) sixty-eight kilograms containing forty kilograms of dextrose f. attenuation; one hundred kilograms of reed, fiftyseven kilograms containing thirty-eight kilograms of dextrose f. attenuation. The liquors of sugar obtained in this manner are neutralized by means of lime-milk, and the neutral solution can be used now for feeding purposes or for the production of alcohol. In the latter case it is attenuated usually with pure yeast and with an addition of three per cent. of phosphoric acid, whereupon the alcohol is refined. The carbohydrates which cannot be attenuated'may be used as fodder, and they are adapted to this purpose just as well as malt-husks or distillers wash, or even surpass these waste products of other industries.

I claim The process herein described consisting in subjecting the cellulosic material under exclusion of air in a closed vessel to ozonized oxygen under pressure and afterward adding sulfuric acid and maintaining the pressure in the vessel, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

LEONHARD ROTH.-

Witnesses:

WILHELM WEIDNER, HERMANN HARTSOH. 

